CN109193681A - A kind of GA for reactive power optimization control method for coordinating considering the wheel control of DLC air-conditioning - Google Patents
A kind of GA for reactive power optimization control method for coordinating considering the wheel control of DLC air-conditioning Download PDFInfo
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- CN109193681A CN109193681A CN201811319334.XA CN201811319334A CN109193681A CN 109193681 A CN109193681 A CN 109193681A CN 201811319334 A CN201811319334 A CN 201811319334A CN 109193681 A CN109193681 A CN 109193681A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a kind of GA for reactive power optimization control method for coordinating for considering the wheel control of DLC air-conditioning, comprising: establishes the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic；Based on the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic, coordinated control is carried out to the idle work optimization of power distribution network；On the basis of considering the control of DLC air-conditioning wheel and starting voltage characteristic, the starting voltage constraint of Load aggregation Hong Kong Commercial Broadcasting area access point is proposed；Propose the GA for reactive power optimization coordinated control model for considering the wheel control of DLC air-conditioning, model built is deeply combined DLC control characteristic with Reactive power control, Demand Side Response can effectively be carried out by reaching, realization avoids the peak hour, keeps away peak scheduling, and can coordinate to solve the problems, such as the purpose for the voltage power-less being likely to occur during air-conditioning DLC wheel control.
Description
Technical field
The present invention relates to GA for reactive power optimization fields, and in particular, to it is a kind of consider the wheel control of DLC air-conditioning power distribution network without
Function optimal coordinated control method.
Background technique
During summer peak meeting (winter), since due to by seasonal effect, medium voltage distribution network part throttle characteristics is presented as " carrying
Load " is overall higher, and local period " sharp cutting edge of a knife or a sword load " is excessively high, and whole day " peak-valley difference " characteristic significantly increases.Climate reason, power grid
The increment of load is mainly air conditioner load, probably accounts for the 30-40% of peak load total amount, and show a increasing trend year by year.In power distribution network
During load run at high level, the low-voltage problem of route is very prominent, has seriously affected the production and life of associated user.Consider
Increment load majority is air conditioner load in power distribution network, and air conditioner load has certain thermmal storage ability, is had biggish negative
Lotus adjusts potentiality, and Utilities Electric Co. stops means by the wheel that reasonable direct load controls (DLC), is enable to respond quickly grid side
" keep away peak, avoid the peak hour " scheduling.If carrying out the wheel control of DLC air-conditioning, i.e., part air conditioner load is suitably reduced, reaches and match with solution
The purpose of low-voltage problem present in power grid.For this purpose, studying the idle work optimization of power distribution network in conjunction with the characteristic of DLC air-conditioning wheel control
Coordinated control model solves the problems, such as the voltage power-less occurred during the control of air-conditioning wheel, by Demand Side Response and Reactive power control
Between carry out reasonable coordination.
In actual operation, " keep away peak, avoid the peak hour " that Utilities Electric Co. takes the control of DLC air-conditioning wheel effectively to carry out grid side is adjusted
Degree eliminates the main transformer overload problem of load peak period；While reduction plans, and tunable solves power distribution network when overloaded
The unqualified problem of voltage, or even can solve infeasible containing voltage under the extreme cases such as overload, reactive compensation wretched insufficiency
The voltage of node gets over safety problem caused by lower limit.But how to coordinate DLC air-conditioning wheel prosecutor formula and power distribution network internal pressure-regulating equipment
Between control planning, be to solve coordinated control between current power distribution network idle work optimization to need the critical issue that solves.
Existing GA for reactive power optimization research is generally divided into 2 classes: one kind is mutually coordinated with the control of Demand-side power supply, such as contains and divides
The idle work optimization method of cloth power supply considers the probabilistic var Optimization Method in Network Distribution containing photovoltaic generating system of illumination；Separately
One kind is mutually coordinated with Demand-side load responding, such as considers the high voltage distribution network idle work optimization model of DLC air conditioner load wheel control, but
There is no DLC air-conditioning wheel control state is introduced into idle work optimization model, i.e. both the control of DLC wheel and Reactive power control are combined into one
Carry out coordinated control, for this purpose, carry out consider Demand-side that the wheel control of DLC air-conditioning is representative accordingly in conjunction with Reactive power control, it is right
Adjusting in the voltage and reactive power optimization of current intelligent distribution network has significant meaning.
Summary of the invention
The object of the invention is that the shortcomings that overcoming the above-mentioned prior art and deficiency, are automatism voltage control (AVC) system
System provides a kind of GA for reactive power optimization control method for coordinating for considering the wheel control of DLC air-conditioning.
For achieving the above object, this application provides a kind of GA for reactive power optimization associations for considering the wheel control of DLC air-conditioning
Control method, which comprises
Establish the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic；
Based on the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic, to the idle work optimization of power distribution network
Carry out coordinated control；Wherein consider the idle work optimization coordinated control model of DLC air conditioner load wheel control characteristic are as follows:
min f4=PLoss (10)
s.t.PG,i-PD,i-siΔPD,i+Pi=0 i=1 ... Nb (11)
QG,i-QD,i+Qcri-siΔQD,i+Qi=0 i=1 ... Nb (12)
ΔQD,j=Δ PD,jTan γ j=1 ... Ns (14)
VDs,j≤VD,jJ=1 ... Ns (15)
sj∈ { 0,1 } j=1 ... Ns (19)
Wherein: PG,iAnd QG,iThe respectively active and reactive power of power distribution network head end power supply node i；PD,iAnd QD,iRespectively
The active and load or burden without work of node i；PiAnd QiThe injection of respectively node i is active and idle；Qcr,iFor candidate compensation buses i's
Reactive compensation amount；Tan γ indicates the power constant of controlled air-conditioning unit, and γ=arccos θ, θ are power-factor angle；ΔPD,j WithThe air conditioner load minimum and maximum reduction of respectively controlled air-conditioning unit j；kD WithIndicate distribution transforming on-load voltage regulation gear
Lower and upper limit；kt WithIndicate 110kV main transformer on-load voltage regulation gear lower and upper limit；Qcr WithIndicate the station 110kV low-pressure side
Compensating reactive power lower and upper limit；QcrD WithIndicate the compensating reactive power lower and upper limit of distribution transforming reactive compensation cabinet.
Further, it builds and considers that the idle work optimization coordinated control model of DLC air conditioner load wheel control characteristic needs satisfaction negative
The voltage magnitude of lotus polymerization Hong Kong Commercial Broadcasting area access point should be greater than or be equal to critical starting voltage, i.e., critical starting voltage constraint is shown in
Formula (1)；
VDs,j≤VD,jJ=1 ... Ns (1)
In formula, VDs,jIndicate the critical starting voltage of controlled air-conditioning unit j.
Further, GA for reactive power optimization control target includes:
The voltage of load bus unqualified problem reference Semi A.D is indicated, specific as follows:
Wherein, | Vi-Vi,min|-For Vi-Vi,minSemi A.D, oeprator indicate meaning be to any real number
V, | v |=max { 0 ,-v }；ViFor the voltage magnitude of node i, Vi,minFor the voltage magnitude lower safety limit of node i；NbMatch for 10kV
Power grid the whole network number of nodes.
Further, GA for reactive power optimization controls target further include:
The state of a control s of the controlled air-conditioning unit j of DLCjIt is to be determined by room temperature and wheel control critical-temperature, i.e.,
In formula, sjIndicate the state of a control of controlled air-conditioning unit, 1 indicates that air-conditioning unit j indicates air-conditioning in the state of shutting down, 0
Unit j is in operating status；TjIndicate that the room temperature of air-conditioning unit j, unit are degree Celsius；Tj,minAnd Tj,maxRespectively air-conditioning unit j
The minimum and highest critical-temperature of wheel control；
When the room temperature of the controlled air-conditioning in power distribution network many places platform area is higher than Tj,maxWhen, to guarantee not cause secondary voltage to get over lower limit
Problem, i.e.,
sj=1, Tj≥Tj,max (3)
The state of a control and the smallest objective function of perfect condition deviation of the controlled air-conditioning unit j of DLC are established, i.e.,
In formula, sj *Expression meets the controlled airconditioning control state of formula (2)；sjIndicate actual controlled airconditioning control state.
Further, GA for reactive power optimization controls target further include:
The load reduction of controlled air-conditioning unit should be equal to power-management centre and plan the total reduction issued a few days ago:
Further, GA for reactive power optimization controls target further include:
The whole network active power loss PLossIt should meet；
min f4=PLoss。 (6)
Further, when establishing the model, it is assumed that different distribution transforming accesses have N on certain 10kV feeder linesGroup it is different by
Control air-conditioning unit, NsThe load reduction of the controlled air-conditioning unit of group is Δ PD,1,ΔPD,2,...,ΔPD,NS, and assume electric power tune
Plan to issue the total reduction of air conditioner load a few days ago to be Δ P in degree centerT；In the distribution low-voltage side power supply point voltage of controlled air-conditioning
VD,jCritical starting voltage V greater than controlled air-conditioning unit jDs,jAfterwards, with this NsThe practical state of a control s of the controlled air-conditioning unit of group with
And its corresponding load reduction Δ PD, all distribution low-voltage side reactive compensation cabinet QcrD, 110kV substation low-voltage side is idle benefit
Repay capacitor QcrWith its main transformer on-load voltage regulation no-load voltage ratio ktFor optimized variable, establishes and consider the idle of DLC air conditioner load wheel control characteristic
Optimal coordinated control model.
The application propose the considerations of DLC air-conditioning wheel control GA for reactive power optimization control method for coordinating, can effectively into
Row Demand Side Response realizes " avoid the peak hour, keep away peak " scheduling, and can coordinate the voltage power-less for solving to be likely to occur during the control of air-conditioning wheel
Problem.This method has the following technical effect that
1) by way of DLC air-conditioning wheel control, the application model can be cut down according to the load that power-management centre is assigned
Plan, as far as possible realization air-conditioning reduction and amount of plan deviation are minimum.
2) load is cut down optimum allocation and combined with voltage power-less optimum control by the application model, can play the whole network
Voltage power-less Optimal Control ability is eliminated during air-conditioning wheel control, it is understood that there may be starting of air conditioner undertension problem and negative
The unqualified problem of lotus node voltage.
3) since the period of Demand Side Response, often load was heavier, load bus voltage is got over Lower Boundary and is more protruded, this
Application model built is precisely that Demand Side Response is mutually coordinated with Reactive power control, realizes once benefiting our pursuits for the two win-win,
Demand side management is preferably carried out for intelligent distribution network provides effective and reasonable solution route.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is the DLC wheel control start and stop curve synoptic diagram of 1 controlled air-conditioning；
Fig. 2 is the applied voltage curve synoptic diagram of single air conditioner loading wheel control；
Fig. 3 is the power distribution network wiring schematic diagram of DLC air-conditioning wheel control.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Please refer to Fig. 1-Fig. 3, the specific embodiment of this method are as follows:
For the Load aggregation quotient of each energy market for participating in grid side, the power-management centre of Utilities Electric Co. can be
Operation plan determines that the air conditioner load of the 2nd day each Load aggregation quotient cuts down total amount a few days ago；Then again by each Load aggregation
Quotient distributes according to need load reduction total amount to different controlled air-conditioning units according to the ability of the reduction plans of itself controlled air-conditioning
Group executes.But different controlled air-conditionings may disperse to access the different distribution transformings in power distribution network in the following, if different controlled air-conditionings
Between load to cut down sendout unreasonable, in fact it could happen that there is idle serious imbalance in 10kV feeder line, causes opening for DLC air-conditioning
Dynamic undertension；Or load bus voltage gets over Lower Boundary can not still be adjusted to safe range.
For this purpose, the built idle coordinated control model of power distribution network needs to meet at 2 points: 1) guaranteeing that all controlled air-conditionings can be normal
Starting, the i.e. voltage magnitude of Load aggregation Hong Kong Commercial Broadcasting area access point should be greater than or be equal to critical starting voltage, i.e., critical starting electricity
Pressure constraint, is shown in formula (1).2) optimum allocation cut down by DLC air conditioner load, the voltage for solving the load bus in power distribution network are got over
Lower limit safety problem.
VDs,j≤VD,jJ=1 ... Ns (1)
In formula, VDs,jIndicate the critical starting voltage of controlled air-conditioning unit j.
Certainly, when Load aggregation quotient carries out Demand Side Response, it is also desirable to meet users'comfort requirement, while controlled air-conditioning
Load cut down total amount and also need to be consistent as far as possible with the plan reduction of control centre, and meet operation of power networks economy
It is required that.In summary, the application proposes that following 4 GA for reactive power optimization control target:
1) after cutting down air conditioner load using DLC, distribution idle in power distribution network is changed, may currently be matched with solution
The unqualified problem of voltage in power grid.For the application to the unqualified problem of the voltage of load bus, the application reference half is absolute as a result,
Deviation indicates, specific as follows:
In formula, | Vi-Vi,min|-For Vi-Vi,minSemi A.D, oeprator indicate meaning be to any real number
V, | v |=max { 0 ,-v }；ViFor the voltage magnitude of node i, Vi,minFor the voltage magnitude lower safety limit of node i；NbMatch for 10kV
Power grid the whole network number of nodes.
2) in actual operation, the state of a control s of the controlled air-conditioning unit j of DLCjIt is to be determined by room temperature and wheel control critical-temperature
, i.e.,
In formula, sjIndicate the state of a control of controlled air-conditioning unit, 1 indicates that air-conditioning unit j indicates air-conditioning in the state of shutting down, 0
Unit j is in operating status；TjIndicate that the room temperature of air-conditioning unit j, unit are degree Celsius；Tj,minAnd Tj,maxRespectively air-conditioning unit j
The minimum and highest critical-temperature of wheel control.
But when the room temperature of the controlled air-conditioning in power distribution network many places platform area is higher than Tj,maxWhen, the whole network will have many places controlled at this time
Air-conditioning starts to start, and causes the whole network load to increase significantly, may occur the unqualified problem of load bus voltage again.To guarantee not draw
It plays secondary voltage and gets over Lower Boundary, even if the room temperature of controlled air-conditioning j is higher than Tj,max, will also extend its air-conditioning and shut down the time, continue
It allows it to be in and shuts down state, i.e.,
sj=1, Tj≥Tj,max (3)
But extend air-conditioning and shut down the time, room temperature will be caused to continue to increase, be affected to users'comfort.For as far as possible
The influence to users'comfort is reduced, the application establishes the state of a control and perfect condition deviation minimum of the controlled air-conditioning unit j of DLC
Objective function, i.e.,
In formula, sj *Expression meets the controlled airconditioning control state of formula (2)；sjIndicate actual controlled airconditioning control state.
3) the load reduction of controlled air-conditioning unit should be equally likely to total reduction that power-management centre plans to issue a few days ago
Amount.
4) the whole network active power loss PLossShould be as smaller as possible, guarantee the economic benefit of power distribution network operation；
min f4=PLoss (6)
In above 4 objective functions, the voltage that the application pays the utmost attention to solve load bus in current power distribution network does not conform to
Lattice problem guarantees the operational safety of power distribution network；Secondly considering that the load of controlled air-conditioning unit is cut down influences most users'comfort
It is small, it is ensured that Demand Side Response can carry out for a long time；Then consider that the load reduction of Load aggregation quotient is differed with plan reduction
Minimum, responsive electricity grid side peak clipping scheduling；Finally just consider the economic benefit of current power distribution network operation.
When establishing the model, it is assumed that different distribution transforming accesses have N on certain 10kV feeder linesThe different controlled air-conditioning list of group
Member, NsThe load reduction of the controlled air-conditioning unit of group is Δ PD,1,ΔPD,2,...,ΔPD,Ns, as shown in Figure 3.And assume electric power tune
Plan to issue the total reduction of air conditioner load a few days ago to be Δ P in degree centerT。
Since the route of distribution low-voltage side power supply point to air conditioner load is shorter, loss of voltage the application of this section of low-voltage circuit
It ignores.Therefore, in the distribution low-voltage side power supply point voltage V of controlled air-conditioningD,jGreater than the critical starting of controlled air-conditioning unit j
Voltage VDs,jAfterwards, with this NsThe practical state of a control s and its corresponding load reduction Δ P of the controlled air-conditioning unit of groupD, it is all
Distribution low-voltage side reactive compensation cabinet QcrD, 110kV substation low-voltage side reactive-load compensation capacitor QcrWith its main transformer on-load voltage regulation no-load voltage ratio
ktFor optimized variable, the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic is established:
min f4=PLoss (10)
s.t.PG,i-PD,i-siΔPD,i+Pi=0 i=1 ... Nb (11)
QG,i-QD,i+Qcri-siΔQD,i+Qi=0 i=1 ... Nb (12)
ΔQD,j=Δ PD,jTan γ j=1 ... Ns (14)
VDs,j≤VD,jJ=1 ... Ns (15)
sj∈ { 0,1 } j=1 ... Ns (19)
In formula: PG,iAnd QG,iThe respectively active and reactive power of power distribution network head end power supply node i；PD,iAnd QD,iRespectively
The active and load or burden without work of node i；PiAnd QiThe injection of respectively node i is active and idle；Qcr,iFor candidate compensation buses i's
Reactive compensation amount；Tan γ indicates the power constant of controlled air-conditioning unit, and γ=arccos θ, θ are power-factor angle；ΔPD,j WithThe air conditioner load minimum and maximum reduction of respectively controlled air-conditioning unit j；kD WithIndicate distribution transforming on-load voltage regulation gear
Lower and upper limit；kt WithIndicate 110kV main transformer on-load voltage regulation gear lower and upper limit；Qcr WithIndicate the station 110kV low-pressure side
Compensating reactive power lower and upper limit；QcrD WithIndicate the compensating reactive power lower and upper limit of distribution transforming reactive compensation cabinet.
This method proposes Load aggregation Hong Kong Commercial Broadcasting area access point on the basis of considering the control of DLC air-conditioning wheel and starting voltage characteristic
Starting voltage constraint.Then on this basis, a kind of GA for reactive power optimization coordination control for considering the wheel control of DLC air-conditioning is proposed
Simulation.Specifically during realization, model built is deeply combined DLC control characteristic with Reactive power control, reach both
Demand Side Response can be effectively carried out, realizes " avoid the peak hour, keep away peak " scheduling, and can coordinate may during solution air-conditioning DLC wheel is controlled
The purpose of the voltage power-less problem of appearance.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of GA for reactive power optimization control method for coordinating for considering the wheel control of DLC air-conditioning, which is characterized in that the method packet
It includes:
Establish the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic；
Based on the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic, the idle work optimization of power distribution network is carried out
Coordinated control；Wherein consider the idle work optimization coordinated control model of DLC air conditioner load wheel control characteristic are as follows:
min f4=PLoss (10)
s.t.PG,i-PD,i-siΔPD,i+Pi=0i=1 ... Nb (11)
QG,i-QD,i+Qcri-siΔQD,i+Qi=0i=1 ... Nb(12)
ΔQD,j=Δ PD,jTan γ j=1 ... Ns (14)
VDs,j≤VD,jJ=1 ... Ns (15)
sj∈ { 0,1 } j=1 ... Ns (19)
Wherein: PG,iAnd QG,iThe respectively active and reactive power of power distribution network head end power supply node i；PD,iAnd QD,iRespectively node
The active and load or burden without work of i；PiAnd QiThe injection of respectively node i is active and idle；Qcr,iFor the idle of candidate compensation buses i
Compensation rate；Tan γ indicates the power constant of controlled air-conditioning unit, and γ=arccos θ, θ are power-factor angle；ΔPD,j With
The air conditioner load minimum and maximum reduction of respectively controlled air-conditioning unit j；kD WithIndicate distribution transforming on-load voltage regulation gear lower limit
And the upper limit；kt WithIndicate 110kV main transformer on-load voltage regulation gear lower and upper limit；Qcr WithIndicate the benefit of the station 110kV low-pressure side
Repay idle lower and upper limit；QcrD WithIndicate the compensating reactive power lower and upper limit of distribution transforming reactive compensation cabinet.
2. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In the idle work optimization coordinated control model for building consideration DLC air conditioner load wheel control characteristic needs to meet Load aggregation Hong Kong Commercial Broadcasting area and connects
The voltage magnitude of access point should be greater than or be equal to critical starting voltage, i.e., formula (1) is shown in critical starting voltage constraint；
VDs,j≤VD,jJ=1 ... Ns (1)
In formula, VDs,jIndicate the critical starting voltage of controlled air-conditioning unit j.
3. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In GA for reactive power optimization control target includes:
The voltage of load bus unqualified problem reference Semi A.D is indicated, specific as follows:
Wherein, | Vi-Vi,min|-For Vi-Vi,minSemi A.D, the meaning that oeprator indicates be to any real number v, | v |
=max { 0 ,-v }；ViFor the voltage magnitude of node i, Vi,minFor the voltage magnitude lower safety limit of node i；NbFor 10kV power distribution network
The whole network number of nodes.
4. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In GA for reactive power optimization controls target further include:
The state of a control s of the controlled air-conditioning unit j of DLCjIt is to be determined by room temperature and wheel control critical-temperature, i.e.,
In formula, sjIndicate the state of a control of controlled air-conditioning unit, 1 indicates that air-conditioning unit j indicates air-conditioning unit j in the state of shutting down, 0
In operating status；TjIndicate that the room temperature of air-conditioning unit j, unit are degree Celsius；Tj,minAnd Tj,maxRespectively air-conditioning unit j wheel control
Minimum and highest critical-temperature；
When the room temperature of the controlled air-conditioning in power distribution network many places platform area is higher than Tj,maxWhen, to guarantee that not causing secondary voltage to get over lower limit asks
Topic, i.e.,
sj=1, Tj≥Tj,max (3)
The state of a control and the smallest objective function of perfect condition deviation of the controlled air-conditioning unit j of DLC are established, i.e.,
In formula, sj *Expression meets the controlled airconditioning control state of formula (2)；sjIndicate actual controlled airconditioning control state.
5. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In GA for reactive power optimization controls target further include:
The load reduction of controlled air-conditioning unit should be equal to power-management centre and plan the total reduction issued a few days ago:
6. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In GA for reactive power optimization controls target further include:
The whole network active power loss PLossIt should meet；
min f4=PLoss。 (6)
7. the GA for reactive power optimization control method for coordinating according to claim 1 for considering the wheel control of DLC air-conditioning, feature exist
In when establishing the model, it is assumed that different distribution transforming accesses have N on certain 10kV feeder linesThe different controlled air-conditioning unit of group, NsGroup
The load reduction of controlled air-conditioning unit isAnd assume that power-management centre plans to issue air-conditioning a few days ago
The total reduction of load is Δ PT；In the distribution low-voltage side power supply point voltage V of controlled air-conditioningD,jGreater than facing for controlled air-conditioning unit j
Boundary starts voltage VDs,jAfterwards, with this NsThe practical state of a control s and its corresponding load reduction Δ of the controlled air-conditioning unit of group
PD, all distribution low-voltage side reactive compensation cabinet QcrD, 110kV substation low-voltage side reactive-load compensation capacitor QcrThere is load with its main transformer
Pressure regulation no-load voltage ratio ktFor optimized variable, the idle work optimization coordinated control model for considering DLC air conditioner load wheel control characteristic is established.
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Application publication date: 20190111 |